Even though these processes are laid out in four neat columns, they are iterative. You go over and over them, they loop back around, and more than one can be going on at once. It's not unlike how the Earth rotates on its axis, rotates around the sun, rotates with the solar system within the galaxy, which is part of the Milky Way, which is part of several larger movements we don't have names for. Yet all the while, we feel as though we're standing still.

Each of the activities in the columns are themselves processes with steps within them. If you're familiar with one, you can use it to help you learn another.